What is Runeforging?

Q: What is Runeforging?
A: Runeforging is a form of Death Knight personal weapon enchantment proffession, new spells are learnt off the class trainer every so often, the enchantments give benefits such as parry increase, on swing proccing frost and shadow damage increase, 30% strength increase.
These do not stack with enchants given by the enchanting proffession.